Mostly for the little ones: infant, toddler, and primary. While I am not showing the infant and toddler portion, it is the same principles.
The general overview of the intervals is at this Montessori Nuggets post on Organizing Primary Presentations. What I have in my notebook is the detailed version which tells me the specific names of exercises to be worked on in each interval. This is available at Garden of Francis or is included free with the Keys of the World Primary Montessori albums online support.
At this first interval, as long as I am reading books with the child, providing lots of real life experiences and having lots of conversations, I am looking at 1-2 "new" presentations a week. This number fluctuates between 1-2 up to 5-6 for some intervals (essentially a daily new presentation).
This does NOT dictate the child's work choices. Simply my presentations of new material.
Each week, I look over the list, consider the needs of my children and select which are the most appropriate.
I might note the date I give the presentation, or check it off, or I might write it on a calendar of some sort. Since I have had a wider variety of children in my home other than my own, I have used a calendar to note what plans and outcomes rather than print out this document for each child.
See this post for more information and pictures - Planning in the Montessori Homeschool
For those looking for elementary Montessori homeschool planning: